<template>
  <div>
      <div class="editor" ref="editor" :style="styles"></div>
      <el-upload
            :action="uploadUrl"
            :headers="uploadHeaders"
            accept="image/*"
            :show-file-list="false"
            :on-success="handleSuccess"
            :on-error="handleError"
          >
            <el-button v-no-more-click size="small" type="primary" v-show="false" :class="uploadBtn">点击上传</el-button>
      </el-upload>
  </div>
</template>

<script>
import Quill from "quill";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";
import { getToken } from "@/utils/auth";
export default {
  name: "Editor",
  props: {
    /* 编辑器的内容 */
    value: {
      type: String,
      default: "",
    },
    /* 高度 */
    height: {
      type: Number,
      default: null,
    },
    /* 最小高度 */
    minHeight: {
      type: Number,
      default: null,
    },
    qidx: {
      type: Number,
      default: 0,
    },
  },
  data() {
    return {
      // uploadUrl: this.getBaseUrl() + "/system/storage",
      uploadUrl: this.getBaseUrl() + "/common/upload",
      fileList: [],
      uploadHeaders: {
        Authorization: "Bearer " + getToken(),
      },
      Quill: null,
      currentValue: "",
      options: {
        theme: "snow",
        bounds: document.body,
        debug: "warn",
        modules: {
          clipboard: { matchVisual: false },
          // 工具栏配置
          toolbar:{
            container: [
              ["bold", "italic", "underline", "strike"],       // 加粗 斜体 下划线 删除线
              ["blockquote", "code-block"],                    // 引用  代码块
              [{ list: "ordered" }, { list: "bullet" }],       // 有序、无序列表
              [{ indent: "-1" }, { indent: "+1" }],            // 缩进
              [{ size: ["small", false, "large", "huge"] }],   // 字体大小
              [{ header: [1, 2, 3, 4, 5, 6, false] }],         // 标题
              [{ color: [] }, { background: [] }],             // 字体颜色、字体背景颜色
              [{ align: [] }],                                 // 对齐方式
              ["clean"],                                       // 清除文本格式
              //["link", "image", "video"]                       // 链接、图片、视频
              ["image"] 
            ],
            handlers:{
              'image':(value)=>{
                if(value){
                  console.log('==自定义图片===',value)
                  document.querySelector('.uploadBtn' + this.qidx).click()
                }else{
                  this.Quill.format('image',false)
                }
              }
            }
          },
        },
        placeholder: "请输入内容",
        readOnly: false,
      },
    };
  },
  computed: {
    styles() {
      let style = {};
      if (this.minHeight) {
        style.minHeight = `${this.minHeight}px`;
      }
      if (this.height) {
        style.height = `${this.height}px`;
      }
      return style;
    },
    uploadBtn(){
      return 'uploadBtn' + this.qidx;
    }
  },
  watch: {
    value: {
      handler(val) {
        if (val !== this.currentValue) {
          this.currentValue = val === null ? "" : val;
          if (this.Quill) {
            this.Quill.pasteHTML(this.currentValue);
          }
        }
      },
      immediate: true,
    },
  },
  mounted() {
    this.init();
  },
  beforeDestroy() {
    this.Quill = null;
  },
  methods: {
    init() {
      let editor = this.$refs.editor;
      this.Quill = new Quill(editor, this.options);
      this.Quill.pasteHTML(this.currentValue);
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        const html = this.$refs.editor.children[0].innerHTML;
        const text = this.Quill.getText();
        let quill = this.Quill;
        this.currentValue = html;
        this.$emit("input", html);
        this.$emit("on-change", { html, text, quill });
      });
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        this.$emit("on-text-change", delta, oldDelta, source);
      });
      this.Quill.on("selection-change", (range, oldRange, source) => {
        this.$emit("on-selection-change", range, oldRange, source);
      });
      this.Quill.on("editor-change", (eventName, ...args) => {
        this.$emit("on-editor-change", eventName, ...args);
      });
    },
    handleSuccess(response, file, fileList) {
      let url = response.fileName;
      // 获取富文本组件实例
        let quill = this.Quill;
        console.log(quill)
        // 如果上传成功
        if (url) {
          console.log(quill.selection.savedRange.index)
            // 获取光标所在位置
            let length = quill.selection.savedRange.index;
            // 插入图片，res为服务器返回的图片链接地址
            quill.insertEmbed(length, 'image', this.getBaseUrl()+url)
            // 调整光标到最后
            quill.setSelection(length + 1)
        } else {
            // 提示信息，需引入Message
            this.msgError('图片插入失败')
        }
    },
    handleError(err, file, fileList) {
      this.msgError("上传图片失败");
    },
  },
};
</script>

<style>
.editor, .ql-toolbar {
  white-space: pre-wrap!important;
  line-height: normal !important;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
</style>